linux-kernel - [PATCH v4 2/9] drm/bridge-connector: switch to using drmm allocations

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Message-Id: <20240531-bridge-hdmi-connector-v4-2-5110f7943622@linaro.org>
Date: Fri, 31 May 2024 23:07:25 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Andrzej Hajda <andrzej.hajda@...el.com>, 
 Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>, 
 Laurent Pinchart <Laurent.pinchart@...asonboard.com>, 
 Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
 Rob Clark <robdclark@...il.com>, Abhinav Kumar <quic_abhinavk@...cinc.com>, 
 Sean Paul <sean@...rly.run>, Marijn Suijten <marijn.suijten@...ainline.org>
Cc: dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org, 
 freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Subject: [PATCH v4 2/9] drm/bridge-connector: switch to using drmm
 allocations

Turn drm_bridge_connector to using drmm_kzalloc() and
drmm_connector_init() and drop the custom destroy function. The
drm_connector_unregister() and fwnode_handle_put() are already handled
by the drm_connector_cleanup() and so are safe to be dropped.

Acked-by: Maxime Ripard <mripard@...nel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
 drivers/gpu/drm/drm_bridge_connector.c | 23 +++++------------------
 1 file changed, 5 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/drm_bridge_connector.c b/drivers/gpu/drm/drm_bridge_connector.c
index 982552c9f92c..e093fc8928dc 100644
--- a/drivers/gpu/drm/drm_bridge_connector.c
+++ b/drivers/gpu/drm/drm_bridge_connector.c
@@ -15,6 +15,7 @@
 #include <drm/drm_connector.h>
 #include <drm/drm_device.h>
 #include <drm/drm_edid.h>
+#include <drm/drm_managed.h>
 #include <drm/drm_modeset_helper_vtables.h>
 #include <drm/drm_probe_helper.h>
 
@@ -193,19 +194,6 @@ drm_bridge_connector_detect(struct drm_connector *connector, bool force)
 	return status;
 }
 
-static void drm_bridge_connector_destroy(struct drm_connector *connector)
-{
-	struct drm_bridge_connector *bridge_connector =
-		to_drm_bridge_connector(connector);
-
-	drm_connector_unregister(connector);
-	drm_connector_cleanup(connector);
-
-	fwnode_handle_put(connector->fwnode);
-
-	kfree(bridge_connector);
-}
-
 static void drm_bridge_connector_debugfs_init(struct drm_connector *connector,
 					      struct dentry *root)
 {
@@ -224,7 +212,6 @@ static const struct drm_connector_funcs drm_bridge_connector_funcs = {
 	.reset = drm_atomic_helper_connector_reset,
 	.detect = drm_bridge_connector_detect,
 	.fill_modes = drm_helper_probe_single_connector_modes,
-	.destroy = drm_bridge_connector_destroy,
 	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 	.debugfs_init = drm_bridge_connector_debugfs_init,
@@ -328,7 +315,7 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
 	int connector_type;
 	int ret;
 
-	bridge_connector = kzalloc(sizeof(*bridge_connector), GFP_KERNEL);
+	bridge_connector = drmm_kzalloc(drm, sizeof(*bridge_connector), GFP_KERNEL);
 	if (!bridge_connector)
 		return ERR_PTR(-ENOMEM);
 
@@ -383,9 +370,9 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
 		return ERR_PTR(-EINVAL);
 	}
 
-	ret = drm_connector_init_with_ddc(drm, connector,
-					  &drm_bridge_connector_funcs,
-					  connector_type, ddc);
+	ret = drmm_connector_init(drm, connector,
+				  &drm_bridge_connector_funcs,
+				  connector_type, ddc);
 	if (ret) {
 		kfree(bridge_connector);
 		return ERR_PTR(ret);

-- 
2.39.2